163540611223105 has 16 divisors (see below), whose sum is σ = 196682401865664. Its totient is φ = 130543414994880.

The previous prime is 163540611223039. The next prime is 163540611223139. The reversal of 163540611223105 is 501322116045361.

It is a de Polignac number, because none of the positive numbers 2^k-163540611223105 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31899775 + ... + 36669835.

It is an arithmetic number, because the mean of its divisors is an integer number (12292650116604).

Almost surely, 2^{163540611223105} is an apocalyptic number.

It is an amenable number.

163540611223105 is a deficient number, since it is larger than the sum of its proper divisors (33141790642559).

163540611223105 is a wasteful number, since it uses less digits than its factorization.

163540611223105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785216.

The product of its (nonzero) digits is 129600, while the sum is 40.

Adding to 163540611223105 its reverse (501322116045361), we get a palindrome (664862727268466).

The spelling of 163540611223105 in words is "one hundred sixty-three trillion, five hundred forty billion, six hundred eleven million, two hundred twenty-three thousand, one hundred five".